diff --git a/packages/core/__tests__/lib/core-check.test.ts b/packages/core/__tests__/lib/core-check.test.ts
index ba97f3f..2b583bb 100644
--- a/packages/core/__tests__/lib/core-check.test.ts
+++ b/packages/core/__tests__/lib/core-check.test.ts
@@ -19,7 +19,6 @@ describe("@idraw/core static check", () => {
       angle: 0
     })).toStrictEqual(false);
 
-
     expect(Core.check.attrs({
       x: 0,
       y: 100,
@@ -29,4 +28,107 @@ describe("@idraw/core static check", () => {
     })).toStrictEqual(false);
   });
 
+
+  test('Core.check.rectDesc', () => {
+
+    expect(Core.check.rectDesc({
+      color: '#ffffff',
+    })).toStrictEqual(true);
+
+    expect(Core.check.rectDesc({
+      color: 123,
+    })).toStrictEqual(false);
+
+    expect(Core.check.rectDesc({
+      borderRadius: 12,
+      borderWidth: 10,
+      borderColor: '#123abf',
+      color: '#ffffff',
+    })).toStrictEqual(true);
+
+    expect(Core.check.rectDesc({
+      borderRadius: 12,
+      borderWidth: 10,
+      borderColor: '#123af',
+    })).toStrictEqual(false);
+ 
+  });
+
+
+  test('Core.check.imageDesc', () => {
+
+    expect(Core.check.imageDesc({
+      src: 'https://xxxxxx',
+    })).toStrictEqual(true);
+
+    expect(Core.check.imageDesc({
+      src: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOg',
+    })).toStrictEqual(true);
+
+    expect(Core.check.imageDesc({
+      src: '/xx/xxx/xxx',
+    })).toStrictEqual(true);
+
+    expect(Core.check.imageDesc({
+      src: './xx/xxx/xxx',
+    })).toStrictEqual(true);
+
+    expect(Core.check.imageDesc({
+      src: 'abcdefg',
+    })).toStrictEqual(false);
+
+    expect(Core.check.imageDesc({
+      src: 1234,
+    })).toStrictEqual(false);
+
+    expect(Core.check.imageDesc({})).toStrictEqual(false);
+  });
+
+  test('Core.check.svgDesc', () => {
+    expect(Core.check.svgDesc({
+      svg: `
+      <svg t="12231231">
+        <g></g>
+      </svg>
+      `,
+    })).toStrictEqual(true);
+
+    expect(Core.check.svgDesc({
+      svg: `
+      <svg>
+        <g></g>
+      </  svg>
+      `,
+    })).toStrictEqual(true);
+
+    expect(Core.check.svgDesc({
+      svg: './xxxxx/xxx',
+    })).toStrictEqual(false);
+
+    expect(Core.check.svgDesc({})).toStrictEqual(false);
+  });
+
+
+  test('Core.check.textDesc', () => {
+    expect(Core.check.textDesc({
+      text: 'abcdefg',
+      color: '#af1234',
+      fontSize: 12,
+      lineHeight: 12,
+      fontFamily: 'abc',
+      textAlign: 'center',
+      borderRadius: 12,
+      borderWidth: 10,
+      borderColor: '#123abf',
+    })).toStrictEqual(true);
+
+    expect(Core.check.textDesc({
+      text: 'abcdefg',
+      color: '#af1234',
+      fontSize: 12,
+    })).toStrictEqual(true);
+
+    expect(Core.check.textDesc({})).toStrictEqual(false);
+  });
+
 })
\ No newline at end of file
diff --git a/packages/core/src/lib/check.ts b/packages/core/src/lib/check.ts
index d536a0f..be292ee 100644
--- a/packages/core/src/lib/check.ts
+++ b/packages/core/src/lib/check.ts
@@ -16,20 +16,81 @@ function attrs(
   return true;
 }
 
+function box(
+  desc: any = {},
+): boolean {
+  const { borderColor, borderRadius, borderWidth } = desc;
+  if (desc.hasOwnProperty('borderColor') && !is.color(borderColor)) {
+    return false;
+  }
+  if (desc.hasOwnProperty('borderRadius') && !is.number(borderRadius)) {
+    return false;
+  }
+  if (desc.hasOwnProperty('borderWidth') && !is.number(borderWidth)) {
+    return false;
+  }
+  return true;
+}
+
 function rectDesc(
   desc: any
 ): boolean {
-  const { borderColor, borderRadius, borderWidth, color } = desc;
-  if (typeof borderColor === 'string' && !is.color(color)) {
+  const { color } = desc;
+  if (desc.hasOwnProperty('color') && !is.color(color)) {
     return false;
   }
-  if (typeof borderColor === 'string' && !is.color(borderColor)) {
+  if (!box(desc)) {
     return false;
   }
-  if (typeof borderRadius === 'number' && !is.number(borderRadius)) {
+  return true;
+}
+
+
+function imageDesc(
+  desc: any
+): boolean {
+  const { src } = desc;
+  if (!is.imageSrc(src)) {
     return false;
   }
-  if (typeof borderWidth === 'number' && !is.number(borderWidth)) {
+  return true;
+}
+
+function svgDesc(
+  desc: any
+): boolean {
+  const { svg } = desc;
+  if (!is.svg(svg)) {
+    return false;
+  }
+  return true;
+}
+
+function textDesc(
+  desc: any
+): boolean {
+  const {
+    text, color, fontSize, lineHeight, fontFamily, textAlign,
+  } = desc;
+  if (!is.text(text)){
+    return false;
+  }
+  if (!is.color(color)){
+    return false;
+  }
+  if (!is.fontSize(fontSize)){
+    return false;
+  }
+  if (desc.hasOwnProperty('lineHeight') && !is.lineHeight(lineHeight)){
+    return false;
+  }
+  if (desc.hasOwnProperty('fontFamily') && !is.fontFamily(fontFamily)){
+    return false;
+  }
+  if (desc.hasOwnProperty('textAlign') && !is.textAlign(textAlign)){
+    return false;
+  }
+  if (!box(desc)) {
     return false;
   }
   return true;
@@ -38,6 +99,9 @@ function rectDesc(
 const check = {
   attrs,
   rectDesc,
+  imageDesc,
+  svgDesc,
+  textDesc,
 }
  
 
diff --git a/packages/types/src/lib/element.ts b/packages/types/src/lib/element.ts
index e0fd436..9eab9f8 100644
--- a/packages/types/src/lib/element.ts
+++ b/packages/types/src/lib/element.ts
@@ -39,7 +39,7 @@ type TypeElemDescText = {
   color: string;
   fontSize: number;
   lineHeight?: number;
-  fontWeight?: string;
+  // fontWeight?: string;
   fontFamily?: string;
   textAlign?: 'center' | 'left' | 'right';
 } & TypeElemBoxDesc